The main purpose of the project is to mature 8 geological structures onshore and offshore Denmark for potential CO2 storage by seismic acquisition and mapping. The project is a cooperation on seismic acquisition of 5 surveys onshore with Uppsala University (Sweden), and with BGR (Germany) and Aarhus University of one offshore survey. Mapping also provided input and advise for the Danish Energy Agency on CCS exploration licensing rounds. The project follows up on the Danish Climate Strategy of 2021 on geological storage of CO2 in Denmark as one of the means to reduce greenhouse gas emissions. The project is one of the largest public scientific seismic acquisition campaigns conducted in Denmark. Many university students (from Uppsala University, University of Copenhagen and Aarhus University) were part of the onshore field work and several Master and PhD projects are generated. Also, the project provides a significant research output with many publications (20 reports; 27 papers & extended abstracts, and +8 in prep) and several scientific presentations. Other presentations on the project include public information meetings prior to each of the seismic survey, an invited talk from Dansk Industri at the Grønne Gasdage conference in Fredericia (Sept., 2024) on the project, university lessons on the project, presentations at varius public arrangements incl. ScienceExpo, Kulturnatten, etc., all providing significant public outreach. The project was financed by the Funding of Higher Education in Denmark - Forskningsreserven.